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Simplifying 550 = 440 + 440(r) * 2 Reorder the terms for easier multiplication: 550 = 440 + 440 * 2r Multiply 440 * 2 550 = 440 + 880r Solving 550 = 440 + 880r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-880r' to each side of the equation. 550 + -880r = 440 + 880r + -880r Combine like terms: 880r + -880r = 0 550 + -880r = 440 + 0 550 + -880r = 440 Add '-550' to each side of the equation. 550 + -550 + -880r = 440 + -550 Combine like terms: 550 + -550 = 0 0 + -880r = 440 + -550 -880r = 440 + -550 Combine like terms: 440 + -550 = -110 -880r = -110 Divide each side by '-880'. r = 0.125 Simplifying r = 0.125
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